Subject: devel-digest V2 #201
From: [email-masked] (devel-digest)
To: [email-masked]

devel-digest          Saturday, June 19 1999          Volume 02 : Number 201

In this issue:

    Re: /dev/audio
    Re: bootup problem when no net is available but it expected one
    Re: Help - Nettrom v1.0c to 2.0.4 upgrade
    Re: Help - Nettrom v1.0c to 2.0.4 upgrade
    Re: /dev/audio
    Re: Help - Nettrom v1.0c to 2.0.4 upgrade
    Re: /dev/audio
    Re: /dev/audio
    Re: /dev/audio
    Unable to access Serial Interface

See the end of this digest for information about devel-digest.

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Date: Fri, 18 Jun 1999 06:04:21 -0500
From: "Darryl DeGraff" <[email-masked]>
Subject: Re: /dev/audio

"Darryl DeGraff" <[email-masked]> wrote:
>>Does this device use a dma channel or an interrupt?  I get communication
>>errors on the parallel port when I send data to it via
>>     cat <file> /dev/audio

Woody Suwalski <woody @ netwinder.org> replied
> I think it uses both. And it is the same ISA to PCI bridge + DMA (Winbond
553),
> as the ISA parallel (Winbond SuperIO)...

That is not to say the same interrupt and DMA, just the same general
'path'?
My impression (I'll have the hardware guy test on scope, if I can) is that
it holds
off (or perhaps kills off) my parallel port ECP mode DMA transfer, although
I
have seen problems on direct reads (PIO) as well.  The manifest behaviour
is that the driver 'wakes up' (return from interruptible_sleep_on) and
cannot,
apparently, be put back to sleep (interruptible_sleep_on seems to return
immediately).

Any suggestions?

darryl

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Date: Fri, 18 Jun 1999 13:24:01 -0400
From: "Andrew E. Mileski" <[email-masked]>
Subject: Re: bootup problem when no net is available but it expected one

Tim Rowledge wrote:
> Question: why on earth can't it work out that since there is no conection it
> should 'do the right thing' and pretend the interface is turned off? Surely that
> isn't a difficult thing to handle? What is one supposed to do if the net is
> dead or the phonelines are down?

Ask Red Hat :p  It's their start-up routines that are to blame.

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Rebel.com  http://www.rebel.com/

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Date: Fri, 18 Jun 1999 13:22:46 -0400
From: Ralph Siemsen <[email-masked]>
Subject: Re: Help - Nettrom v1.0c to 2.0.4 upgrade

Steve Cockwell wrote:
> 
> I've flashed it.  According to the instructions in the FAQ I've entered
> the following:
> 
> load-defaults
> setenv kernconfig partition
> setenv rootdev /dev/hd2

That should be /dev/hda2 in your case.

> When I boot I just get a kernel panic: cannot mount root partition on
> 00:00.

It should be trying 03:02 (/dev/hda2)... 

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Date: Fri, 18 Jun 1999 13:25:22 -0400
From: "Andrew E. Mileski" <[email-masked]>
Subject: Re: Help - Nettrom v1.0c to 2.0.4 upgrade

Steve Cockwell wrote:
> load-defaults
> setenv kernconfig partition
> setenv rootdev /dev/hd2
> save-all
> boot
> 
> When I boot I just get a kernel panic: cannot mount root partition on
> 00:00.

/dev/hda2  (Or was that just a typo)

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Rebel.com  http://www.rebel.com/

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Date: Fri, 18 Jun 1999 14:04:17 -0400
From: Woody Suwalski <[email-masked]>
Subject: Re: /dev/audio

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"Darryl DeGraff" <[email-masked]> wrote:
>
>That is not to say the same interrupt and DMA, just the same general
>'path'?

Right. And the Winbond 553 chip is buggy.

>Any suggestions?
>
Sorry, do not know the solution. We decided to sidestep it by not using the
hard disk DMA, or else the audio was choppy.

You seem to have similar, but different problem.

Long time ago I tried to hard preset the priorities of different DMA
channels/banks in the 553, but none produced a satisfactory result.

Because of 553 bugs one can not use correctly ping-pong e.t.c.

You can still see the leftover code in the 2.0.35 setup-vnc.c module
(commented out).

Woody
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Date: Fri, 18 Jun 1999 14:33:55 -0400
From: Steve Cockwell <[email-masked]>
Subject: Re: Help - Nettrom v1.0c to 2.0.4 upgrade

Ralph Siemsen AND Andrew E. Mileski wrote:

> > load-defaults
> > setenv kernconfig partition
> > setenv rootdev /dev/hd2
> 
> That should be /dev/hda2 in your case.
> 
> > When I boot I just get a kernel panic: cannot mount root partition on
> > 00:00.
> 
> It should be trying 03:02 (/dev/hda2)...

Wow - not one but *two* correct answers in under 15 minutes...  You guys
are terrific!  (I'll have to try a harder question next time :-)

Thanks a bunch (now moving on to a new kernel...),

.src

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Date: Fri, 18 Jun 1999 14:11:06 -0500
From: "Darryl DeGraff" <[email-masked]>
Subject: Re: /dev/audio

Woody Suwalski <woody @ corelcomputer.com> wrote:
>> And the Winbond 553 chip is buggy.

Bummer!  Any likelyhood of it changing in future designs?

darryl

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Date: Fri, 18 Jun 1999 15:43:17 -0400
From: "Andrew E. Mileski" <[email-masked]>
Subject: Re: /dev/audio

Darryl DeGraff wrote:
> Woody Suwalski <woody @ corelcomputer.com> wrote:
> >> And the Winbond 553 chip is buggy.
> 
> Bummer!  Any likelyhood of it changing in future designs?

We are committed to producing an inferior product....NOT!

Of course we are looking for alternatives :D preferably a PCI device,
so we can get rid of the silly ISA bus completely.

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Rebel.com  http://www.rebel.com/

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Date: Fri, 18 Jun 1999 15:59:09 -0500
From: "Darryl DeGraff" <[email-masked]>
Subject: Re: /dev/audio

Andrew E. Mileski <andrewm @ netwinder.org> wrote
> We are committed to producing an inferior product....NOT!

Sorry, I did not mean to infer such.

Also, thanks to Woody for the information/suggestion on PIO.
I have 100% successful transmission now.  Not an inferior
product; just need to know how to use it.

darryl

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Date: Fri, 18 Jun 1999 18:14:11 -0700
From: "Steven Ng" <[email-masked]>
Subject: Unable to access Serial Interface

I have been trying to configure my serial interface /dev/cua0 using
setserial.  setserial statserial both return operation not supported by
device.  I also attempted to do this to dev/cua1-3 also.  Is there something
I need to do to get the serial interface up and running before I can access
it with setserial, or do I have a potential hardware problem?

Steven Ng

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End of devel-digest V2 #201
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